Transparent proxy server that works as a poor man's VPN. Forwards over ssh. Doesn't require admin. Works with Linux and MacOS. Supports DNS tunneling.
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Scott Kuhl 0d460c0264 Check if client and server are running on same machine.
This patch checks to see if the client and the server are running on
the same machine. The client creates a temporary file that the server
then looks for. If the server finds the file, it knows it is on the
same machine as the client and it deletes the file. Next, if the
client detects that the file has been deleted by the server, it
assumes that it is running on the same machine as the server.

This check is necessary since a user may specify a remote host with
"-r" that actually points back to the same machine the client is on.

This commit uses tempfile.mkstemp() which was added in Python 2.3.

Functionally, this commit does nothing except add a debug message
about if the client and server are on the same machine. It also sets a
variable which contains this information for potential future use.

Potential future uses include...

1) If the TTL hack is removed, this can be used to print a error
message since running the client and server on the same machine would
no longer be supported.

2) If the TTL hack is continued, we could disable the hack when the
client and the server are on different machines.
2021-03-10 14:05:17 -05:00
.github/workflows Add Python 3.9 support 2020-12-28 11:01:07 +11:00
bin Auto sudoers file (#269) 2019-12-13 08:15:31 +11:00
docs Allow comments in configuration file 2021-02-16 07:51:32 +11:00
sshuttle Check if client and server are running on same machine. 2021-03-10 14:05:17 -05:00
tests firewall: Allow overriding the TTL 2021-03-05 08:53:53 +11:00
.gitignore Add .gitignore .vscode/ path. Resolve the issue #374 adding tproxy mark option to allow different network mapping. 2020-12-28 10:20:46 +11:00
.prospector.yml Fixes some style issues and minor bugs 2017-11-13 11:58:43 +11:00
bandit.yml updated bandit config 2018-10-17 20:52:04 +11:00
CHANGES.rst Release version 1.0.5 2020-12-29 10:34:58 +11:00
LICENSE Change license text to LGPL-2.1 2020-08-26 12:25:36 -04:00
MANIFEST.in Fix error in requirements.rst 2017-07-09 09:08:48 +10:00
README.rst Readme: add instructions for installing via MacPorts 2020-12-29 19:12:06 +11:00
requirements-tests.txt Bump pytest from 6.2.1 to 6.2.2 2021-01-26 18:22:31 +11:00
requirements.txt Bump setuptools-scm from 5.0.1 to 5.0.2 2021-03-06 11:19:54 +11:00
run Updated supported Python versions 2020-05-29 07:44:51 +10:00
setup.cfg Fix/pep8 (#277) 2019-02-11 09:59:13 +11:00
setup.py feat: remove mock from test dependencies. 2021-01-17 15:42:55 +11:00
tox.ini remove py35 from tox.ini 2021-01-17 15:42:24 +11:00

sshuttle: where transparent proxy meets VPN meets ssh
=====================================================

As far as I know, sshuttle is the only program that solves the following
common case:

- Your client machine (or router) is Linux, FreeBSD, or MacOS.

- You have access to a remote network via ssh.

- You don't necessarily have admin access on the remote network.

- The remote network has no VPN, or only stupid/complex VPN
  protocols (IPsec, PPTP, etc). Or maybe you *are* the
  admin and you just got frustrated with the awful state of
  VPN tools.

- You don't want to create an ssh port forward for every
  single host/port on the remote network.

- You hate openssh's port forwarding because it's randomly
  slow and/or stupid.

- You can't use openssh's PermitTunnel feature because
  it's disabled by default on openssh servers; plus it does
  TCP-over-TCP, which has `terrible performance`_.
  
.. _terrible performance: https://sshuttle.readthedocs.io/en/stable/how-it-works.html

Obtaining sshuttle
------------------

- Ubuntu 16.04 or later::

      apt-get install sshuttle

- Debian stretch or later::

      apt-get install sshuttle
      
- Arch Linux::

      pacman -S sshuttle

- Fedora::

      dnf install sshuttle

- NixOS::

      nix-env -iA nixos.sshuttle

- From PyPI::

      sudo pip install sshuttle

- Clone::

      git clone https://github.com/sshuttle/sshuttle.git
      cd sshuttle
      sudo ./setup.py install

- FreeBSD::

      # ports
      cd /usr/ports/net/py-sshuttle && make install clean
      # pkg
      pkg install py36-sshuttle

- macOS, via MacPorts::

      sudo port selfupdate
      sudo port install sshuttle

It is also possible to install into a virtualenv as a non-root user.

- From PyPI::

      virtualenv -p python3 /tmp/sshuttle
      . /tmp/sshuttle/bin/activate
      pip install sshuttle

- Clone::

      virtualenv -p python3 /tmp/sshuttle
      . /tmp/sshuttle/bin/activate
      git clone https://github.com/sshuttle/sshuttle.git
      cd sshuttle
      ./setup.py install

- Homebrew::

      brew install sshuttle

- Nix::

      nix-env -iA nixpkgs.sshuttle


Documentation
-------------
The documentation for the stable version is available at:
https://sshuttle.readthedocs.org/

The documentation for the latest development version is available at:
https://sshuttle.readthedocs.org/en/latest/


Running as a service
--------------------
Sshuttle can also be run as a service and configured using a config management system: 
https://medium.com/@mike.reider/using-sshuttle-as-a-service-bec2684a65fe